Valve-controlling means.



J. W. KENEVEL.

VALVE GONTROLLING MEANS.

APPLICATION FILED JUNE 1s, 1907.

901,712. Batenteaot.2o,19o s.

narran amarga rarnivr onirica. N,- f'

EANNOT W. KENEVEL, OF PHILADELPHIA, PENNSYLVANIA.

VALVE-CONTROLLING MEANS.

Application tiled. June 13, 1.907. Serial No. 378,757.

To all whom 'it may concern:

Be it known that l, JEANNO'T W. KENE- vm., a citizen et the UnitedStates, residing in Philadelphia, Pennsylvania, have invented ImprovedValve-Controlling Means, oi which the `following is a specilication.

The object oi my invention is to" provide means for automaticallyregulating the supply of fluid or liquid bodies by variations of thetemperature. For instance, my invention may be employed in connectionwith the operation of a refrigerating plant for .the purpose ofregulating the passage of ammonia to and controlling the operation ofthe compressor. It {vill be understood, however, that with but slightmodifications, Without materially alte ying the structure embodying myinvention, it may be applied for the purpose ol regulating the passageof'fluid or liqvuid in connection with a heating apparatus,

instead oi a cooling apparatus.

My invention 1s fully shown 1n the accompanying drawing, in which:

Figure R, is an elevation, partly in section, of the mechanism formingthe subject oi my invention, and. Fig. 2, is a sectional view on theline (1f-a, Fig. 1, illustrating detail of the same.

ln the drawing, represents a valve casing having` a seat 2- or a valve3; such valve being held to its seat by a suitable spring 4,

` and in the present instance this valve is arranged to control thepassage of ammonia to the compressor ot the re'lrigerating apparatus.The valve casing is provided with a sleeve plug 6, in which the stem 7oi the valve is slidably mounted, and the bore of said sleeve issuitably packed and closed by a screw plug 8 having an end 9 forengagement with the valve stem; such lug being adjustable and serving toregulate or limit the movement of said valve stem, and consequently themovement olf said valve from its seat. The opposite side et the valvecasing carries a bonnet 10 in which is mounted. a suitable threaded stem11; the bonnet being provided with a gland 12 whereby said stem may besuitably packed. The stein 11 carries a projecting end 12, the normalposition of which is just out'of contact with the valve 3 when thelatter is seated.

The valve casing and the parts just described may be disposed in properrelation to a bracket 15 having ears 16 in which is journaled a s indle17 carrying a inion 18. This spind e also carries a circuit )reaker 19speciseationiof Letters Patent.

Patented oct. 2o, isos.

whereby electrical connection may be made and broken by the turning ofsaid spindle for controlling thev operation of `a compressor. Thespindle 17 is connected to the stem 11 in in engagement with spring armcontacts y19,a

such manner that it may turn said stem and 5f at the same time permitthe latter to move longitudinally with respect thereto; the stem beingbored to receive said spindle andl having slots 11a adapted toaccommodate a pin .175L

carried by the s indle 17.

Carried by t e bracket 15 is a vessel 2O containing a body 'of expandingfluid 21' and having a tubular extension 22 which maybe made of glass orother material. 'The extension 22 is suitablysupported by sleeves orcollars 23 secured to said bracket 15 and'its vjoint with the vessel 2()is suitably packed and retained by a gland 24. The body of expandingfluid within this extension stands,

normally aboutmidvvay of the height of the same, and resting on the bodyof' expanding fluid is a piston 25 carried by a rod 25a'. This plungeris suitably packed so as lto ill tlreifinterior of such extension, andlcarries at its upper end. `a racked portion 26 for engagement with thepinion 18 carried by the spindie 17. in normal. position with relationto the pinion and the body of expanding lluid, by means of a spring 27,upon which the body of expanding lluid tends to react by its expansiondue to a rise in temperature, .hutwhen the temperature is lowered thespriniT will cause the piston to return to its norma position.

ln order to maintain the piston and its rack in proper relative positionwith relation to the pinion, the vessel containing the expanding fluidis provided with a regulating plug 28 having an end for engagement by asuitable tool whereby it may be moved in and out of the chamber of saidvessel and thereby displace a suilicient quantity of the body ofexpanding fluid to dispose the-piston in its proper position. The vessel20 is supported in place by the collars 29.

The operation of the structure is quite simple and is substantially asfollows: Sullicient cold having been generated by the .compression ofthe ammonia, the parts are This rack and piston are maintained Asubstantially in the position shown in the vessel, lifting the rack 26with it, and the latter coacting with the pinion 18 carried by thespindle 17 will turn the stern or rod 11. The latter having a threadedportion, such turning Will effect a longitudinal movement of the samewith its tip 13 engaging the valve 3, and the latter will be moved l'romits seat permitting the passage of ammonia to the compressor. The sameaction of the s` indle shifts the circuit breaker 19 so as to in ie theproper electrical connections, and the compressor will be started,eilecting in a short While further compression of' the ammonia and aconsequent reduction in the temperature. Vhcn this takes place, the exanding fluid Will fall, the several parts Wil be replaced and the valve3 close. Mercury or any other form of fluid expandim3P and contractingunder varying degrees o? temperature may be employed.

I claim:

1. The combination of a valve, means for maintaining the same in oneposition, a rotatable stem adapted to engage said valve and movablelongitudinally when rotated in engavement with said valve, and meansconro led by the temperature for rotating said stem to eIiec-t a changein the position of said valve.

2. The combination of a valve, means for maintaining the same in oneposition, a longitudinally movable stem in engagement with said valveand serving to eiliect a change in the position of said valve when movedin one direction, and to permit closing of the valve when moved in thevopposite direction, a

movable spindle in engagement with said stem, a pinion carried by saidspindle, a rack in engagementwith said pinion, a piston car# ried bysaid rack, a body of expanding fluid for moving said rack in onedirection, and

means for moving the rack in the op osite direction When released fromthe ini uence of the expanding fluid.

3. The combination of a valve, means for maintaining the same in aclosed position, a motor, circuit closing means for starting said motor,a rotatable stem in engagement with the valve, said stem also carryingcircuit closing means, and means controlled by the tem perature foroperating said stem and simultaneously closing the circuit to start themotor.

4. The combination of a valve, means for maintaining the same in aclosed position, a rotatable stem adapted to engage said valve andmovable longitudinally when rotated in engagement with said valve, andmeans con trolled by the temperature for rotating said stem to open thevalve.

5. The combination of a valve, means for inaintaininT the same in closedposition, a longitudina ly movable stem in engagement with said valveand serving to open the valve when moved in one direction, and to permitclosing of the valve when moved in the Opposite dlrection, a movablespindle in engagement with said stem, a pinion carried by said spindle,a rack in engagement with said pinf ion, a piston carried by said rack,a body of mercury for moving said rack in one direction, and means lormoving the rack in the opposite direction when released from theinfluence of the mercury.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

J EANNOT W. KENEVEL.

Witnesses:

MURRAY C. BOYER, ARTHUR J. PURssnLL.

